package cn.imokay.lock;

import java.util.concurrent.locks.Condition;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;

/**
 * 线程间定制通讯
 */
public class ThreadDemo3 {
    public static void main(String[] args) {
        Share2 share = new Share2();
        new Thread(new Runnable() {
            @Override
            public void run() {
                for (int i = 0; i < 10; i++) {
                    try {
                        share.print5(i);
                    } catch (InterruptedException e) {
                        throw new RuntimeException(e);
                    }
                }
            }
        },"AA").start();

        new Thread(new Runnable() {
            @Override
            public void run() {
                for (int i = 0; i < 10; i++) {
                    try {
                        share.print10(i);
                    } catch (InterruptedException e) {
                        throw new RuntimeException(e);
                    }
                }
            }
        },"BB").start();

        new Thread(new Runnable() {
            @Override
            public void run() {
                for (int i = 0; i < 10; i++) {
                    try {
                        share.print15(i);
                    } catch (InterruptedException e) {
                        throw new RuntimeException(e);
                    }
                }
            }
        },"CC").start();
    }
}


class Share2 {
    //定义标志位
    private int flag = 1;//1-AA 2-BB 3-CC
    private Lock lock = new ReentrantLock();

    private Condition c1 = lock.newCondition();
    private Condition c2 = lock.newCondition();
    private Condition c3 = lock.newCondition();

    public void print5(int loop) throws InterruptedException {
        lock.lock();
        try {
            while (flag != 1) {
                c1.await();
            }

            for (int i = 0; i < 5; i++) {
                System.out.println(Thread.currentThread().getName() + ":::" + i+"::轮数：："+loop);
            }
            //通知BB
            flag = 2;
            c2.signal();

        } finally {
            lock.unlock();
        }

    }

    public void print10(int loop) throws InterruptedException {
        lock.lock();
        try {
            while (flag != 2) {
                c2.await();
            }

            for (int i = 0; i < 10; i++) {
                System.out.println(Thread.currentThread().getName() + ":::" + i+"::轮数：："+loop);
            }
            //通知CC
            flag = 3;
            c3.signal();

        } finally {
            lock.unlock();
        }

    }

    public void print15(int loop) throws InterruptedException {
        lock.lock();
        try {
            while (flag != 3) {
                c3.await();
            }

            for (int i = 0; i < 15; i++) {
                System.out.println(Thread.currentThread().getName() + ":::" + i+"::轮数：："+loop);
            }
            //通知AA
            flag = 1;
            c1.signal();

        } finally {
            lock.unlock();
        }

    }
}